Provided is a communication unit for achieving, in a 5GS, in a case that a situation occurs in which information for connectivity to a Local Area Data Network (LADN) requested by a user equipment is not valid, error processing of a control device of a core network and error processing of the user equipment. Provided is a communication unit for achieving, in a 5GS, in a case that a situation occurs in which information for connectivity to a Local Area Data Network (LADN) requested by a user equipment is not valid, error processing in which a control device of a core network rejects the request of the user equipment. Also provided is a communication unit for achieving, in a case that a situation occurs in which information for connectivity to a LADN requested by a user equipment is not valid, appropriate error processing performed by the user equipment.
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1. A User Equipment (UE) comprising: transmitting and receiving circuitry configured to: transmit, to a control device in a core network, a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and receive, from the control device, a registration accept message including a LADN information IE, and a controller, wherein in a case that there exists one or more LADN Data Network Names (DNNs) which are included in the LADN indication IE and not included in the LADN information IE, the controller considers the one or more LADN DNNs as not available.
This invention relates to wireless communication systems, specifically improving User Equipment (UE) handling of Local Area Data Network (LADN) services in 5G networks. The problem addressed is ensuring UEs correctly identify available LADN services when registering with the network, preventing unnecessary service attempts for unavailable LADN Data Network Names (DNNs). The UE includes transmitting and receiving circuitry that sends a registration request to a core network control device, including a LADN indication Information Element (IE) listing DNNs the UE supports. The control device responds with a registration accept message containing a LADN information IE listing currently available LADN DNNs. The UE compares these lists and determines any DNNs present in its request but missing from the response are unavailable. This prevents the UE from attempting to access non-existent LADN services, improving network efficiency and reducing signaling overhead. The controller in the UE performs this comparison and availability determination. The solution ensures UEs only attempt to use LADN services that are actually provisioned in the network, avoiding wasted resources and improving user experience. This mechanism is particularly valuable in 5G networks where LADN services provide localized data connectivity.
2. A control device in a core network comprising: transmitting and receiving circuitry configured to: receive, from a User Equipment (UE), a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and transmit, to the UE, a registration accept message including a LADN information IE, wherein the LADN indication IE includes one or more LADN Data Network Names (DNNs), and the control device indicates, to the UE, that the one or more LADN DNNs are not available, by not including the one or more LADN DNNs in the LADN information IE.
A control device in a core network manages User Equipment (UE) registration for Local Area Data Networks (LADNs). LADNs are data networks restricted to specific geographic areas, and UEs must register to access them. The problem addressed is efficiently communicating LADN availability to UEs during registration. The control device receives a registration request from a UE containing a LADN indication Information Element (IE) that lists one or more LADN Data Network Names (DNNs) the UE seeks to access. The control device then transmits a registration accept message to the UE, which includes a LADN information IE. If the LADN DNNs requested by the UE are unavailable, the control device omits those DNNs from the LADN information IE, thereby signaling their unavailability to the UE. This approach avoids explicit rejection messages and simplifies network signaling by leveraging the absence of DNNs in the response to indicate unavailability. The control device may also include other LADN DNNs in the LADN information IE if they are available, allowing the UE to proceed with registration for those networks. This method ensures efficient and clear communication of LADN availability during UE registration.
3. A communication control method performed by a User Equipment (UE), the communication control method comprising: transmitting, to a control device in a core network, a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and receiving, from the control device, a registration accept message including a LADN information IE, wherein in a case that there exists one or more LADN Data Network Names (DNNs) which are included in the LADN indication IE and not included in the LADN information IE, the UE considers the one or more LADN DNNs as not available.
This invention relates to communication control methods for User Equipment (UE) in wireless networks, specifically addressing the management of Local Area Data Network (LADN) services. The problem solved is ensuring efficient and accurate handling of LADN availability during network registration, preventing unnecessary resource consumption and service disruptions. The method involves a UE transmitting a registration request to a control device in the core network, including a Local Area Data Network (LADN) indication Information Element (IE) that lists one or more LADN Data Network Names (DNNs) the UE supports or requests. The control device responds with a registration accept message containing a LADN information IE, which specifies the LADN DNNs currently available in the network. The UE then compares the DNNs in its request against those in the response. If any requested DNNs are missing from the response, the UE treats those DNNs as unavailable, avoiding attempts to access non-existent services. This ensures the UE only engages with supported LADN services, optimizing network resources and improving service reliability. The method enhances communication efficiency by dynamically aligning UE capabilities with network offerings.
4. A communication control method performed by a control device in a core network, the communication control method comprising: receiving, from a User Equipment (UE), a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and transmitting, to the UE, a registration accept message including a LADN information IE, wherein the LADN indication IE includes one or more LADN Data Network Names (DNNs), and the control device indicates, to the UE, that the one or more LADN DNNs are not available, by not including the one or more LADN DNNs in the LADN information IE.
This invention relates to communication control in a core network, specifically for managing Local Area Data Network (LADN) services. The problem addressed is ensuring efficient and accurate communication between User Equipment (UE) and the core network regarding the availability of LADN services. LADN services are data network services restricted to specific geographic areas, and their availability must be dynamically communicated to UEs to avoid unnecessary signaling and resource consumption. The method involves a control device in the core network receiving a registration request message from a UE, which includes a LADN indication Information Element (IE) containing one or more LADN Data Network Names (DNNs). The control device then transmits a registration accept message to the UE, which includes a LADN information IE. The key innovation is that the control device indicates the unavailability of certain LADN DNNs by omitting them from the LADN information IE in the registration accept message. This approach allows the UE to recognize that the omitted LADN DNNs are not available in the current location, reducing unnecessary signaling and improving network efficiency. The method ensures that the UE only attempts to access available LADN services, optimizing resource usage and reducing latency.
5. A User Equipment (UE) comprising: transmitting and receiving circuitry configured to: transmit, to a control device in a core network, a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and receive, from the control device, a registration accept message including a LADN information IE, and a controller, wherein in a case that there exists a LADN Data Network Name (DNN) which is included in the LADN indication IE and not included in the LADN information IE, the controller considers the LADN DNN as not available.
This invention relates to wireless communication systems, specifically improving how User Equipment (UE) handles Local Area Data Network (LADN) services. The problem addressed is ensuring UEs can efficiently determine the availability of LADN services during network registration, avoiding unnecessary signaling and improving resource management. The UE includes transmitting and receiving circuitry and a controller. During registration, the UE sends a registration request to a control device in the core network, including a LADN indication Information Element (IE) that lists supported LADN Data Network Names (DNNs). The control device responds with a registration accept message containing a LADN information IE, which lists available LADN DNNs. The controller in the UE compares the two lists. If any LADN DNN is present in the UE's request but missing in the network's response, the UE treats that DNN as unavailable. This mechanism allows the UE to dynamically adjust its service expectations based on real-time network conditions, reducing unnecessary service requests and optimizing network resource usage. The solution enhances efficiency in LADN service provisioning by ensuring UEs only attempt to access available services.
6. A control device in a core network comprising: transmitting and receiving circuitry configured to: receive, from a User Equipment (UE), a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and transmit, to the UE, a registration accept message including a LADN information IE, wherein the LADN indication IE includes a LADN Data Network Name (DNN), and the control device indicates, to the UE, that the LADN DNN is not available, by not including the LADN DNN in the LADN information IE.
This invention relates to core network control devices in wireless communication systems, specifically addressing the management of Local Area Data Network (LADN) services for User Equipment (UE). The problem solved is ensuring efficient signaling when a requested LADN service is unavailable, reducing unnecessary network overhead and improving resource utilization. The control device in the core network includes transmitting and receiving circuitry that handles registration requests from UEs. When a UE sends a registration request message containing a LADN indication Information Element (IE), which specifies a LADN Data Network Name (DNN), the control device processes this request. If the requested LADN DNN is not available, the control device transmits a registration accept message to the UE. This message includes a LADN information IE, but crucially, the requested LADN DNN is omitted from this IE. By excluding the DNN, the control device implicitly signals to the UE that the requested LADN service is not available, avoiding the need for additional explicit rejection messages. This approach streamlines the registration process and conserves network resources by minimizing redundant signaling. The solution is particularly useful in scenarios where LADN services are location-dependent or dynamically provisioned, ensuring UEs are promptly informed of unavailable services without unnecessary communication overhead.
7. A communication control method performed by a User Equipment (UE), the communication control method comprising: transmitting, to a control device in a core network, a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and receiving, from the control device, a registration accept message including a LADN information IE, wherein in a case that there exists a LADN Data Network Name (DNN) which is included in the LADN indication IE and not included in the LADN information IE, the UE considers the LADN DNN as not available.
This invention relates to communication control in wireless networks, specifically for User Equipment (UE) handling Local Area Data Network (LADN) services. LADNs are data networks with restricted service areas, and UEs must determine their availability to avoid unnecessary signaling or service disruptions. The problem addressed is ensuring UEs accurately identify available LADN services based on network responses. The method involves a UE transmitting a registration request to a core network control device, including a LADN indication Information Element (IE) that lists supported LADN Data Network Names (DNNs). The control device responds with a registration accept message containing a LADN information IE, which lists currently available LADN DNNs. The UE compares these lists and treats any LADN DNN present in its request but missing from the response as unavailable. This prevents the UE from attempting to use non-available LADN services, reducing signaling overhead and improving network efficiency. The method ensures UEs dynamically adapt to LADN availability changes without manual configuration.
8. A communication control method performed by a control device in a core network, the communication control method comprising: receiving, from a User Equipment (UE), a registration request message including a Local Area Data Network (LADN) indication Information Element (IE); and transmitting, to the UE, a registration accept message including a LADN information IE, wherein the LADN indication IE includes a LADN Data Network Name (DNN), and the control device indicates, to the UE, that the LADN DNN is not available, by not including the LADN DNN in the LADN information IE.
The invention relates to communication control methods in core networks, specifically for managing Local Area Data Network (LADN) services. LADNs are data networks that provide localized services, and their availability depends on the UE's location. The problem addressed is efficiently signaling LADN availability to User Equipment (UE) during registration without unnecessary data transmission. The method involves a control device in the core network receiving a registration request from a UE, which includes a LADN indication Information Element (IE) specifying a LADN Data Network Name (DNN). The control device then transmits a registration accept message to the UE, which includes a LADN information IE. If the LADN DNN is not available, the control device omits the LADN DNN from the LADN information IE, thereby signaling its unavailability to the UE. This approach reduces signaling overhead by avoiding explicit rejection messages while clearly indicating LADN status. The method ensures that UEs are informed of LADN availability without additional signaling, optimizing network efficiency. The control device's role includes processing registration requests, determining LADN availability, and constructing appropriate response messages. The UE relies on the presence or absence of the LADN DNN in the response to determine service availability. This solution is particularly useful in scenarios where LADN services are location-dependent and dynamic.
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November 15, 2019
March 1, 2022
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